Polyester Needle Felt
Polyester needle felt is a durable non-woven fabric produced through an advanced needle-punching process. It features fine, damage-resistant fibers and is specially treated to prevent dust clogging. This material offers excellent filtration performance, allowing air or gas to pass through smoothly while effectively trapping dust particles. It also provides strong chemical resistance, making it ideal for filtering corrosive media.
To enhance performance in demanding environments, polyester needle felt can be further treated with water- and oil-repellent (hydrophobic & oleophobic) finishes, preventing moisture or oily substances from penetrating the fabric. Additionally, antistatic treatment can be applied to reduce static charge buildup, ensuring safe and stable operation in explosive or high-dust applications. These optional triple-proof treatments significantly extend the fabric’s service life and reliability.
Properties of Polyester Needle Felt
| Material | Polyester fiber/Polyester base fabric | |
|---|---|---|
| Weight | g/m² | 450-600 |
| Thickness | mm | 1.4-1.8 |
| Finish treatment | Singeing, calendaring, shaping, flame retardant, waterproof, film coating | |
| Air permeability | m3 / m2 / min | 13-16 |
| Tensile strength | ||
| Warp | 1100 | |
| Weft | 1300 | |
| Tensile elongation | ||
| Warp | 25 | |
| Weft | 50 | |
| Temperature | ||
| Continuos temperature | C° | 120 |
| Instant temperature | C° | 150 |
Properties of Waterproof, Antistatic, Oil-proof Polyester Needle Felt
| Material | Polyester fiber/Polyester anti-static base fabric | |
|---|---|---|
| Weight | g/m² | 450-600 |
| Thickness | mm | 1.4-1.8 |
| Air permeability | m3 / m2 / min | 13-16 |
| Tensile strength | ||
| Warp | 1000 | |
| Weft | 1300 | |
| Tensile elongation | ||
| Warp | 25 | |
| Weft | 50 | |
| Temperature | ||
| Continuos temperature | C° | 120 |
| Instant temperature | C° | 150 |
| Triboelectric Potential (maximum value) | C° | 250 |
| Triboelectric Potential (average) | C° | 183 |
| Surface lectric Core Surface Degree | mc/m2 | 3.4 |
| Finish treatment | calendering, singeing or Teflon coating | |
Properties of Antistatic Polyester Needle Felt
| Material | Polyester fiber/Polyester anti-static base fabric | |
|---|---|---|
| Weight | g/m² | 450-600 |
| Thickness | mm | 1.4-1.8 |
| Air permeability | m3 / m2 / min | 13-16 |
| Tensile strength | ||
| Warp | 1050 | |
| Weft | 1300 | |
| Tensile elongation | ||
| Warp | 25 | |
| Weft | 50 | |
| Temperature | ||
| Continuos temperature | C° | 120 |
| Instant temperature | C° | 150 |
| Triboelectric Potential (maximum value) | C° | 250 |
| Triboelectric Potential (average) | C° | 153 |
| Surface lectric Core Surface Degree | mc/m2 | 3.4 |
| Half-life | s | 0.75 |
Applications & FAQ
Polyester needle felt is widely used in industries that require stable filtration performance, chemical resistance, and long service life. Common applications include:
1. Industrial Dust Collection
Baghouse dust collectors
Cement, steel, and power plants
Grain processing, feed mills, and woodworking
2. Air Pollution Control & Environmental Protection
Flue gas pre-filtration
Waste incineration systems
VOC and dust removal equipment
3. Air Filtration & Ventilation Systems
HVAC filters
Industrial ventilation units
Positive/negative pressure filtration systems
4. Chemical & Process Industries
Chemical powder collection
Plastics, rubber, carbon black processing
Pharmaceutical and food dust pre-filtration (non-contact areas)
5. Special Treatment Applications
Hydrophobic & oleophobic (water- and oil-repellent) for moisture- or oil-rich dust
Antistatic for explosive dust such as flour, coal, aluminum, carbon black
Three-proof treatments for environments with high humidity or difficult dust
1. Is polyester needle felt chemically resistant?
2. What surface treatments are available?
3. How long is the service life?
4. Can polyester needle felt be used for sticky or oily dust?
5. When is antistatic treatment necessary?
6. Do you offer customization?
7. Do you provide customized filter bags?
8. What parameters can be customized?
9. Can you produce filter bags for any type of dust collector?
10. Can you provide samples before mass production?
Need Help with Specifications?
Our engineers can guide you in selecting the right material and structure to suit a wide range of filtration applications.